A screenshot of an iOS 8 homescreen with the new Healthbook, Preview and TextEdit icons was posted to China's Weibo microblog and spotted by 9to5Mac. The source of the screenshot cannot be verified, but insiders close to 9to5Mac claim the icons represented in the image are legitimate.

Healthbook is Apple's rumored fitness app for iOS 8 and its icon revealed in the screenshot loosely matches earlier descriptions. It may connect to the iWatch and track vital health and fitness parameters such as calories burned, heart rate and potentially other statistics like hydration and blood glucose levels.

Preview and TextEdit may debut in iOS later this year as part of an expansion of Apple's iCloud service. Their icons mirror those of their OS X counterparts, which is unusual as Apple uses different icons for its OS X and iOS apps. This suggests the icons are placeholders and may change before the apps are released. Tips is an unknown app, and its role in iOS 8 is not certain.

Overall, the screenshot shows the iOS 8 design appearing essentially identical to that of iOS 7, although this may change over time as work continues on the next-generation operating system. Apple is expected to unveil iOS 8 later this year at WWDC 2014 and release it publicly sometime this fall. Besides underlying improvements to services like Maps and Siri, it also is expected to include health and fitness features that will integrate with Apple's iWatch wearable device.

Mark Gurman from 9to5Mac has a 100% perfect track record when it comes to his own sources. Yeah, 100%, he’s never been wrong so far out of the 30 times he chimed in on something and it later got verified.

And now he’s saying:
"I have confirmed with several sources that these shots are legitimate"

Of course those OS X-esque icons are placeholders, but I would still expect those feature in iOS 8 judging by Gurman's accuracy.

I'm sceptical around the TextEdit app over anything else. Why would Apple put the 'quick and filthy' file editor tool into iOS? You can't see the filesystem, and I use TextEdit on my Mac solely to modify the .hosts file - why would it be on iOS?

Notes is there for the quick noting of 'stuff', and Pages does the whole lot. It's a middle-man product.

I really dig those icons! This is the kind of graphical overhaul we need; finally rid of skeuomorphic traces like… paper, pen, photographs, a magnif—Okay, okay, what the hell? I know they're placeholder icons, but it isn't difficult to throw a couple of gradients behind white outlines!